Former president Barack Obama and Mayor Rahm Emanuel share a laugh at Chicago's recent summit on climate change.

Welcome to the Reader's weekday news briefing for Wednesday, December 13, 2017.

Emanuel to Colbert: Chicago is a "Trump-free zone"

President Donald Trump is no longer welcome in Chicago, Mayor Rahm Emanuel declared on The Late Show With Stephen Colbert Monday night. "Our motto: A city he'll never sleep in. We don't want him," Emanuel said. "Look, Donald Trump is driving forward looking through the rearview mirror, and I'm not going that way because I want my city going that way and I want it to be a Trump-free zone." [NBC Chicago]

Chicago Public Schools students will learn coding thanks to Apple's "Everyone Can Code" initiative

Apple wants to teach coding to every Chicago Public Schools student under its "Everyone Can Code" initiative, Apple chief executive officer Tim Cook told USA Today. "We've fundamentally concluded instead of just waiting and going into the four-year school system and seeing how many women and minorities are graduating in coding, which is abysmal, that we had to back up," Cook said. "[We have to go] all the way into elementary school and junior high school in order to fundamentally change the diversity." [USA Today]

How Janice Jackson rose from CPS student to interim CEO

Janice Jackson has risen from CPS student to CPS principals' supervisor, chief education officer, and now soon-to-be interim chief executive officer. "Janice did write on her admissions essay at UIC she hoped someday to lead the Chicago Public Schools," Jackson's mentor Steve Tozer said. "She's embarrassed by that now because it seems naive for her to have said that. But the reality is she has wanted to make as deep an impact on this city and this school system as she could." [Sun-Times]

Joe Biden jokes about memes he's inspired during Chicago appearance

Former vice president Joe Biden appeared at the Chicago Theatre Monday evening to promote his book Promise Me, Dad. In a discussion with actor and singer Leslie Odom Jr., Biden discussed the viral memes he's inspired, the tragic death of his son Beau Biden, and the subsequent decision he made not to run for president in 2016. "You know all those memes are basically true," Biden said. [Tribune]

Rauner calls Claypool resignation a "very tragic situation"

Governor Bruce Rauner is speaking out about the sudden resignation of Chicago Public Schools chief executive officer Forrest Claypool. "Very tragic situation, very sad when you look at the behavior and the mistakes and the things he did, very, very tragic," the governor said. "I've worked with Claypool for years. Very disappointed to see what he's done. And it's a tragedy for the schoolchildren of Chicago." [Tribune]

Elske chefs David and Anna Posey discuss their notable first year

It's only been a year since David and Anna Posey opened their critically acclaimed restaurant Elske in the West Loop. The Poseys discuss everything from creating their affordable tasting menu to other new restaurants in the local dining scene with Eater. [Eater Chicago]